CVE-2026-40468
9.1
CRITICAL
CVSS 3.1
EPSS 0.20%
Description
Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.
How to fix CVE-2026-40468
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/gawk—no fix listed
Is CVE-2026-40468 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |